# Speed of a bullet

A 10 g bullet is fired horizontally into a 1 kg block of wood hanging from a 1 m long string attached to the ceiling, getting stuck in the block. Due to the impact, the block then swings on the string to a maximum angle of 60 degrees with respect to the vertical. How fast was the bullet traveling in m/s?

Details and assumptions

• The acceleration of gravity is $-9.8\text{ m/s}^2$.
• You may neglect air resistance.
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